vogel



y-7, 1963 H. A. VOGEL 3,088,132

SUPPORTING DEVICE FOR SPRING STRIPS Filed Dec. 22, 1960 2 sheets sheet 1 g I A4 4 i 1) 1 INVENTOR. //d 70 )6; c 7,

a P/vX/sy y 1963 H. A. VOGEL 3,088,132

SUPPORTING DEVICE FOR SPRING STRIPS Filed Dec. 22, 1960 2 Sheets-Sheet 2 INVENTOR. tzj Harv/J 481 w an United States Patent Office 3,088,132 Patented May 7, 1963 3,088,132 SUPPORTING DEVICE FOR SPRING STRIPS Harold A. Vogel, Detroit, Mich., assignor to No-Sag Spring Company, Detroit, Mich., a corporation of Michigan Filed Dec. 22, 1960, Ser. No. 77,609 3 Claims. (Cl. -260) This invention relates to spring strip supporting elements and particularly to a coil spring supporting device for securing the end of a sinuous spring strip to a frame.

Various means have been employed heretofore for attaching the laterally extending end of a sinuously formed wire spring strip to a frame element of a cushion. Clips were provided which Were nailed directly into the rail of the frame with the spring strip end pivotally secured within the eye portion of the clip. In another arrangement the spring ends were bent downwardly on the center line of the strip and were disposed in apertures extending downwardly into the top rail edge. Instill another arrangement the end loop was bent upwardly on the center line of the strip and was hooked over a rod or into an eye in the top of the frame to anchor the end of the spring strip thereto.

The present invention pertains to the use of a coil spring tightly wound on a small diameter having the end turns disposed on the center line of the spring to form eyes. The eye at one end of the coil spring extends into an aperture in the end of a clip attached to the top of the frame. The eye at the other end of the coil spring extends through a pair of eyes in a U-shaped clip to the web end of which the transverse end of the spring strip is secured. The U-shaped clip preferably has a soundproof layer of material thereon to prevent squeaks and sounds from being developed when the transverse end of the spring strip pivots therewithin. A pair of such springs may be employed with the adjacent eyes secured to a clip having a pair of spaced apertures for securing the clip to the rail of the frame. The U-shaped clip which supports the transverse end of the spring strip has the other eyes of the two coil springs secured thereto. The U-shaped clip is preferably made from or lined with brass, bronze or other material compatible with the material of the spring strip so as not to produce any squeaks or noises.

A pair of coil springs could be employed having the eyes at each end secured in eyes of U-shaped wire clips, the webs therebetween being secured respectively by staples to the top surface of the rail of the frame and by a band to the transverse end of the spring strip. It is also within the purview of the invention to construct an elongated spring and retain a length at the center when bending the two end portions outwardly thereof downwardly into parallel relation. The two eyes on the end of the end portions engage the apertures in a clip attached to the rail of the frame while the transverse end of the spring strip extends into the center section which is normal to the two parallel sections. It is within the purview of the invention to employ a cylinder of paper, plastic or plastic coated paper within the central section of the coil spring or coat the central section to soundproof the inner surface thereof.

Accordingly, the main objects of the invention are: to provide a resilient support for the end of a sinuous spring strip; to provide a length of sinuous spring strip having an eye at each end secured to clips which are attached to a rail of a cushion frame and to the transverse end of the spring strip respectively; to provide a length of sinuous spring strip having an eye at each end with the end portions bent into parallel relationship leaving a small section in the center through which the transverse end of the spring strip extends, and, in general, to provide a resilient support for the end of a sinuous spring strip which is simple in construction and economical of manufacture.

Other objects and features of novelty of the invention will be specifically pointed out or will become apparent when referring, for a better understanding of the invention, to the following description taken in conjunction with the accompanying drawings, wherein:

FIGURE 1 is a broken plan view of an attaching device for the ends of a spring strip embodying features of the present invention;

FIG. 2 is a view of structure, similar to that illustrated in FIG. 1, employing two coil springs in the device;

FIG. 3 is a view of structure, similar to that illustrated in FIG. 2, showing another form of attaching means for the ends of the spring strip;

FIG. 4 is a sectional view of the structure illustrated in FIG. 3, taken along the line 4-4 thereof;

FIG. 5 is a view of structure, similar to that illustrated in FIG. 1, showing a still further form of the invention;

FIG. 6 is a sectional view of the structure illustrated in FIG. 5, taken along the line 66 thereof;

FIG. 7 is a view of structure, similar to that illustrated in FIG. 2, showing another form which the invention may assume; I

FIG. 8 is a view of structure, similar to that illustrated in FIG. 7, showing a still further form of the invention, and

FIG. 9 is a view of structure, similar to that illustrated in FIG. 8, showing another form which the invention may assume.

A sinuous spring strip 10, :as illustrated in FIG. 1, is made of wire bent back and forth into sinuous form to provide oppositely disposed loops -11 and '12 joined by straight torsion bar sections 13. The end torsion bar section 14 has an end 15 offset .to prevent the end section 14 from moving out of a receiving aperture or tunnel. The end section 14 is secured in an eye portion 17 of a clip 16, as illustrated in FIG. 4. The base layer 18 of the clip is made of steel, while the inner layer 19 is made of paper, plastic, plastic coated paper or the like, for the purpose of eliminating squeaks and noises when the end section 14 pivots therein. The paper or plastic layer 19 may be retained thereon by fingers deflected from a fourth unsheared side of an aperture 21 in the metal portion 18 of the clip. The clip 16 has an aperture 22 in which a circular eye 23 at the end of a coil spring 24 extends for securing the adjacent end of the coil spring thereto. The eye 25 at the opposite end of the coil spring extends in an aperture 26 of a clip 27 which is secured to the top edge of a rail 28 of a cushion frame by a pair of nails 29. In any seat cushion construction it is usually diflicult to obtain comfort when using the spring strips -10 if they are secured by the clip 16 directly to the top of the rail 28. More softness is desired at the front and rear edges of the cushion and this is obtained through the use of the coil springs 24 which permit the end section 14 of the spring strip to move downwardly when the load is applied to the cushion.

Depending upon the load applied to the cushion, one or more of the coil springs 24 are employed. As illustrated in FIG. 2, two coil springs 31 are used to support the end sect-ion 14 of the spring strip 10. In this arrangement a clip 30 has a pair of apertures 22 for receiving the eyes 23 at the adjacent end of the coil springs 31. The eyes 23 are disposed in a vertical plane while the eyes 32 at the opposite end of the coil are disposed in a hori- Zontal plane. These eyes extend within eyes '33 at the ends of a U-shaped wire clip 34, the web portion 35 of which is secured to the top of the rail 28 by a pair of staples 36. A greater load may be supported by the cushion when pairs of coil springs 31 are employed, or the spring strip 10 may be spread a greater distance C! apart to support the same load when employing the pairs of coil springs.

In FIG. 3 a construction is illustrated, which is exactly the same as that of FIG. 2 with the exception that the arms of a U-shaped element 37 extend through a pair of apertures 38 in the frame to have the web portion 39 thereof abutted against the portion of the frame dis posed between the apertures.

In FIGS. 5 and 6 the spring 24 is illustrated as having the eye 25 extend through an aperture 26 in a plate 41 which is secured by a nail 42 and a pair of tines 43 to the rail 28. The eye 23 extends through apertures 44 in the flanges 45 of a U-shaped clip 46 the web portion 47 of which receives the end section 14 of the sinuous spring strip 10. The clip 46 has the liner 19 adhered to the inner surface thereof by an adhesive material or by mechanical means as pointed out hereinabove.

In FIG. 7 a pair of the coil springs 24 are illustrated as being attached to a clip 51- which is secured to the top of the rail 28 by a pair of nails 52 with the eyes 25 extending through the apertures 26 thereof. The eyes 23 at the opposite end of the coil springs 24 extend over a Web portion 54 of a U-shaped wire clip 55, the ends of the arms of which are formed into eyes 56 through which the end section 14 of the spring strip extends. The wire clip 55 may be made of brass, bronze, aluminum or other metal which will not squeak or produce a sound when the end section 14 pivots within the eyes 56 thereof.

In FIG. 8 a pair of coil springs 57 have eyes 58 on the ends which are disposed in a horizontal plane. The eyes 58 engage eyes 59 in wire clips 61 which are of U shape. The web 62' of the clip 61 adjacent to the rail 28 is secured thereon by a pair of staples 36. The web 62 of the clip 61 adjacent to the spring strip 10 is secured by a band 64 to the end section 14 thereof.

A still further form of the invention is illustrated in FIG. 9 wherein a single length of coil spring 65 has parallel'end sections 66 and 67 bent from a central section 68. The end eyes 69 are secured in apertures 26 in a plate 71 which is secured to the top of the rail 28 by nails 42. The section 68 receives the end section .14 of the sinuous spring strip 10, and when found desirable a cylindrical or semicylindrical soundproofing element 72 may be inserted Within the coils of the section in position to be engaged by the end section 14 to prevent any sound or squeaks from being produced when pivoting therein. The same result will be obtained if a layer of plastic material is coated over all or at least the inside surface of the coil section.

What is claimed is:

1. In a device for securing the end section of a sinuous spring strip to a rail of a cushion, a coil spring having a hook on each end, a clip having an aperture through which one of the hooks extends and having additional apertures by which the clip is secured to a rail element, and a clip having an aperture through which the hook at the other end of the coil spring extends, said clip also having a loop transversely disposed to said last hook for receiving the transversely disposed straight portion of the end section of a sinuous spring strip in pivotal relation therewith.

2. In a device for securing the end section of a sinuous spring strip to a rail of a cushion, a coil spring having a hook on each end, a clip having an aperture through which one of the hooks extends and having additional apertures by which the clip is secured to a rail element, and a second clip of U shape having spaced parallel flanges joined by a web with the hook at the other end of the coil spring extending through aligned apertures through said flanges with the end section of said spring strip positioned within the space between the flanges in abutting relation to said web.

3. In a device for securing the end section of a sinuous spring strip to a rail of a cushion, a coil spring having a hook at one end and means for securing said hook to the cushion rail, and means having an elongated aperture at the other end of the coil spring, said aperture being disposed transversely of the axis of the coil spring for receiving the transversely disposed straight portion of the end section of the sinuous spring strip to thereby resilently secure the end section to the cushion rail.

References Cited in the file of this patent UNITED STATES PATENTS 2,716,442 Larson et al Aug. 30, 1955 2,717,635 Stanton Sept. 13, 1955 2,958,375 Bond Nov. 1, 1960 

1. IN A DEVICE FOR SECURING THE END SECTION OF SINUOUS SPRING STRIP TO A RAIL OF A CUSHION, A COIL SPRING HAVING A HOOK ON EACH END, A CLIP HAVING AN APERTURE THROUGH WHICH ONE OF THE HOOKS EXTENDS AND HAVING ADDITIONAL APERTURES BY WHICH THE CLIP IS SECURED TO A RAIL ELEMENT AND A CLIP HAVING AN APERTURE THROUGH WHICH THE HOOK AT THE OUTER END OF THE COIL SPRING EXTENDS, SAID CLIP ALSO HAVING A LOOP TRANSVERSELY DISPOSED TO SAID LAST HOOK FOR RECEIVING THE TRANSVERSELY DISPOSED STRAIGHT PORTION OF THE END SECTION OF A SINUOUS SPRING STRIP IN PIVOTAL RELATION THEREWITH. 